Hmmm maybe. It's kinda like when you know someone is mad at you or infatuated with you so much that you can tell with one glance.
Also I'm starting to think that people can tell when you're staring at them because of what they feel O.O

yes, i believe in this more when you see the people surrounding you EVERYDAY you can sense negativity when the "negative people" are close to you LESSON: choose your friends you may not know, he/she is sweet around you, but evil behind you :)

But seriously, there's more to perception than meets the eye and you can be absolutely right about sensing dislike, criminal intent or even love when in tune with your inner most desires for the world around you; Basic yoga teachings, really.